1 - Hyundai Veloster

The car experts at Kelley Blue Book call the Hyundai Veloster the number one coolest car available for under $18,000. All that coolness starts with a funky, asymmetrical three-door design for easier access to the back seat. (The door's not visible from this side.)

I also found it fun to drive around town, although not exactly the quickest car in the bunch.